Chi Eridani (original) (raw)
Chi Eridani (χ Eri) est une étoile binaire de la constellation de l'Éridan. Sa magnitude apparente est de 3,70.
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| dbo:abstract | χ Eridani (Latinised as Chi Eridani) is a binary star system in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 3.70. The distance to this system, as determined using the parallax method, is around 58 light years. The pair had an angular separation of 5.0 arcseconds as of 1994. This corresponds to a projected separation of around 128 AU. The primary component is an evolving G-type subgiant star with a stellar classification of G8 IV. It is about 1.6 times the mass of the Sun and has 4 times the Sun's radius. The star shines with 10 times the solar luminosity from its outer atmosphere at an effective temperature of 5,115 K. Unusually for a star of this class, it shows a photometric variability of 0.04 in magnitude, which may be due to a previous mass transfer from the secondary companion, or else from an undiscovered third companion. The companion is about 7 magnitudes fainter than the primary and may be the source of the X-ray emission from this system. This emission has a luminosity of 504.4×1027 erg s−1. (en) Chi Eridani (χ Eri) est une étoile binaire de la constellation de l'Éridan. Sa magnitude apparente est de 3,70. (fr) Chi Eridani (χ Eri) adalah salah satu bintang di rasi Eridanus. Chi Eridani tergolong bintang kelas G5IV dan memiliki magnitudo 3.69. Bintang ini berada pada jarak 57 tahun cahaya dari Bumi. (in) Chi Eridani (χ Eri) è una stella situata nella costellazione dell'Eridano. La sua magnitudine apparente è +3,70 e dista 58 anni luce dal sistema solare. (it) Chi Eridani ( Eridanus) é uma estrela na direção da constelação de Eridanus. Possui uma ascensão reta de 01h 55m 56.83s e uma declinação de −51° 36′ 34.5″. Sua magnitude aparente é igual a 3.69. Considerando sua distância de 57 anos-luz em relação à Terra, sua magnitude absoluta é igual a 2.48. Pertence à classe espectral G5IV. (pt) Chi Eridani (χ Eridani, förkortat Chi Eri, χ Eri) som är stjärnans Bayerbeteckning, är en dubbelstjärna belägen i den sydvästra delen av stjärnbilden Eridanus. Den har en kombinerad skenbar magnitud på 3,70 och är synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 56,0 mas, beräknas den befinna sig på ett avstånd på ca 58 ljusår (ca 18 parsek) från solen. (sv) 波江座χ，又名CP-52 241，HD 11937、SAO 232573、HR 566，是波江座的一颗恒星，视星等为3.7，位于銀經280.88，銀緯-62.67，其B1900.0坐标为赤經1h 52m 4s，赤緯-52° -62.67′ 23″。 (zh) Хи Эридана (χ Эридана, Chi Eridani, χ Eridani, сокр. Chi Eri, χ Eri) — звезда в южном созвездии Эридана. Звезда имеет видимую звёздную величину 3.70m, и, согласно шкале Бортля, видна невооружённым глазом даже на внутригородском небе (англ. Inner-city sky). Из измерений параллакса, полученных во время миссии Hipparcos, известно, что звезда удалена от Земли примерно на 58 св. лет (17,9 пк). Звезда наблюдается южнее , то есть южнее Рима, южнее Пекина и южнее Вашингтона (38° с. ш.); лучшее время наблюдения — октябрь. (ru) |
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| dbo:wikiPageWikiLink | dbr:Bayer_designation dbr:Binary_star dbr:Stellar_classification dbc:Bayer_objects dbc:Binary_stars dbc:Bright_Star_Catalogue_objects dbc:Durchmusterung_objects dbc:Eridanus_(constellation) dbc:G-type_subgiants dbc:Gliese_and_GJ_objects dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects dbr:Constellation dbr:Effective_temperature dbr:G-type_star dbr:Light_year dbr:Stellar_evolution dbr:Subgiant dbr:Stellar_atmosphere dbr:Photometry_(astronomy) dbr:Stellar_parallax dbr:Eridanus_(constellation) dbr:International_Celestial_Reference_System dbr:J2000.0 dbr:Angular_separation dbr:Solar_luminosity dbr:Arcsecond dbr:Astronomical_Unit dbr:Apparent_visual_magnitude dbr:Variable_star dbr:X-ray_astronomy dbr:Projected_separation |
| dbp:absmagV | 2.390000 (xsd:double) (en) |
| dbp:an | A (en) B (en) |
| dbp:appmagV | 3.700000 (xsd:double) (en) |
| dbp:aricns | 163 (xsd:integer) 164 (xsd:integer) |
| dbp:bV | +0.85 (en) |
| dbp:class | (en) G8IIIb CNIV (en) G8IV or (en) |
| dbp:component | A (en) |
| dbp:constell | dbr:Eridanus_(constellation) |
| dbp:epoch | dbr:J2000.0 |
| dbp:equinox | J2000.0 (en) |
| dbp:mass | 1.580000 (xsd:double) |
| dbp:pError | 0.329100 (xsd:double) |
| dbp:parallax | 57.377400 (xsd:double) |
| dbp:propMoDec | −295.332 (en) |
| dbp:propMoRa | +682.281 (en) |
| dbp:radialV | –6.30 (en) |
| dbp:rotationalVelocity | 4.500000 (xsd:double) |
| dbp:simbad | chi+Eri (en) |
| dbp:uB | +0.46 (en) |
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| dcterms:subject | dbc:Bayer_objects dbc:Binary_stars dbc:Bright_Star_Catalogue_objects dbc:Durchmusterung_objects dbc:Eridanus_(constellation) dbc:G-type_subgiants dbc:Gliese_and_GJ_objects dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects |
| gold:hypernym | dbr:Star |
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| rdfs:comment | Chi Eridani (χ Eri) est une étoile binaire de la constellation de l'Éridan. Sa magnitude apparente est de 3,70. (fr) Chi Eridani (χ Eri) adalah salah satu bintang di rasi Eridanus. Chi Eridani tergolong bintang kelas G5IV dan memiliki magnitudo 3.69. Bintang ini berada pada jarak 57 tahun cahaya dari Bumi. (in) Chi Eridani (χ Eri) è una stella situata nella costellazione dell'Eridano. La sua magnitudine apparente è +3,70 e dista 58 anni luce dal sistema solare. (it) Chi Eridani ( Eridanus) é uma estrela na direção da constelação de Eridanus. Possui uma ascensão reta de 01h 55m 56.83s e uma declinação de −51° 36′ 34.5″. Sua magnitude aparente é igual a 3.69. Considerando sua distância de 57 anos-luz em relação à Terra, sua magnitude absoluta é igual a 2.48. Pertence à classe espectral G5IV. (pt) Chi Eridani (χ Eridani, förkortat Chi Eri, χ Eri) som är stjärnans Bayerbeteckning, är en dubbelstjärna belägen i den sydvästra delen av stjärnbilden Eridanus. Den har en kombinerad skenbar magnitud på 3,70 och är synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 56,0 mas, beräknas den befinna sig på ett avstånd på ca 58 ljusår (ca 18 parsek) från solen. (sv) 波江座χ，又名CP-52 241，HD 11937、SAO 232573、HR 566，是波江座的一颗恒星，视星等为3.7，位于銀經280.88，銀緯-62.67，其B1900.0坐标为赤經1h 52m 4s，赤緯-52° -62.67′ 23″。 (zh) Хи Эридана (χ Эридана, Chi Eridani, χ Eridani, сокр. Chi Eri, χ Eri) — звезда в южном созвездии Эридана. Звезда имеет видимую звёздную величину 3.70m, и, согласно шкале Бортля, видна невооружённым глазом даже на внутригородском небе (англ. Inner-city sky). Из измерений параллакса, полученных во время миссии Hipparcos, известно, что звезда удалена от Земли примерно на 58 св. лет (17,9 пк). Звезда наблюдается южнее , то есть южнее Рима, южнее Пекина и южнее Вашингтона (38° с. ш.); лучшее время наблюдения — октябрь. (ru) χ Eridani (Latinised as Chi Eridani) is a binary star system in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 3.70. The distance to this system, as determined using the parallax method, is around 58 light years. The pair had an angular separation of 5.0 arcseconds as of 1994. This corresponds to a projected separation of around 128 AU. The companion is about 7 magnitudes fainter than the primary and may be the source of the X-ray emission from this system. This emission has a luminosity of 504.4×1027 erg s−1. (en) |
| rdfs:label | Chi Eridani (en) Chi Eridani (in) Chi Eridani (it) Chi Eridani (fr) Chi Eridani (pt) Хи Эридана (ru) Chi Eridani (sv) 天園二 (zh) |
| owl:sameAs | freebase:Chi Eridani yago-res:Chi Eridani wikidata:Chi Eridani dbpedia-fr:Chi Eridani dbpedia-id:Chi Eridani dbpedia-it:Chi Eridani dbpedia-pt:Chi Eridani dbpedia-ru:Chi Eridani dbpedia-sv:Chi Eridani dbpedia-tr:Chi Eridani dbpedia-zh:Chi Eridani https://global.dbpedia.org/id/4i1kT |
| prov:wasDerivedFrom | wikipedia-en:Chi_Eridani?oldid=1079511580&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:Chi_Eridani |
| foaf:name | χ Eridani (en) |
| is dbo:wikiPageRedirects of | dbr:Chi_Eri dbr:Χ_Eridani |
| is dbo:wikiPageWikiLink of | dbr:Upsilon2_Eridani dbr:Upsilon3_Eridani dbr:Theta_Eridani dbr:Eridanus_in_Chinese_astronomy dbr:Table_of_stars_with_Bayer_designations dbr:List_of_stars_in_Eridanus dbr:Iota_Horologii dbr:Chi_Eri dbr:List_of_star_systems_within_55–60_light-years dbr:Χ_Eridani |
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